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US 12,749,774 B2Granted
Electrochemical battery module and method therefor
AssigneeGM Global Technology Operations LLC
InventorChristopher Schlaupitz
Life of this patent
Estimating the term…
Abstract
A battery module composed of a plurality of electrochemical cells has selected positive and negative terminals being electrically connected and weldlessly mechanically joined employing a first adhesive material having electrically conductive properties and a second adhesive material having electrically isolative properties.
Claims20
A battery assembly, comprising:
- a plurality of electrochemical cells each having a cylindrical outer can, a positive terminal located at a longitudinal end of the cylindrical outer can, and a negative terminal located at the longitudinal end of the cylindrical outer can and circumscribing the positive terminal;
- a plurality of interconnect boards (ICBs);
- a plurality of first adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans and having an annular shape circumscribing a respective one of the positive terminals, the first adhesive joints electrically connecting and weldlessly mechanically joining the negative terminals of the plurality of electrochemical cells to a first set of the ICBs;
- and
- a plurality of second adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans and circumscribed by a respective one of the first adhesive joints, the second adhesive joints electrically connecting and weldlessly mechanically joining the positive terminals of the plurality of electrochemical cells to a second set of the ICBs distinct from the first set of the ICBs.
2 more elements
A battery assembly, comprising:
- a plurality of electrochemical cells each having a cylindrical outer can, a positive terminal centrally located at a longitudinal end of the cylindrical outer can, and an annular negative terminal located at the longitudinal end of the cylindrical outer can and circumscribing the positive terminal;
- a positive battery tab;
- a negative battery tab;
- a plurality of positive busbars electrically connecting the positive terminals of the electrochemical cells to the positive battery tab;
- a plurality of negative busbars electrically connecting the negative terminals of the electrochemical cells to the negative battery tab;
- a plurality of first adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans, abutting a respective one of the negative terminals, and having an annular shape circumscribing a respective one of the positive terminals, the first adhesive joints electrically connecting and weldlessly mechanically joining the negative terminals of the plurality of electrochemical cells to one another and to the negative busbars;
- a plurality of second adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans, abutting a respective one of the positive terminals, and circumscribed by a respective one of the first adhesive joints, the second adhesive joints electrically connecting and weldlessly mechanically joining the positive terminals of the plurality of electrochemical cells to one another and to the positive busbars;
- and
- a plurality of third adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans, interposed between the first and second adhesive joints, and having an annular shape circumscribing the positive terminal and the second adhesive joint, the third adhesive joints electrically isolating the positive and negative terminals.
6 more elements
A method for assembling a multicell battery, the method comprising:
- arranging a plurality of electrochemical cells each including a cylindrical outer can, a positive terminal located at a longitudinal end of the cylindrical outer can, and a negative terminal located at the longitudinal end of the cylindrical outer can and circumscribing the positive terminal;
- joining, via a first set of interconnect boards, the negative terminals of the plurality of electrochemical cells, wherein the negative terminals of the plurality of electrochemical cells are electrically connected and weldlessly mechanically joined to the first set of interconnect boards employing a plurality of first adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans and having an annular shape circumscribing a respective one of the positive terminals, wherein each of the first adhesive joints includes a first adhesive material comprising an electrically conductive mechanically adhesive material;
- and
- joining, via a second set of interconnect boards, the positive terminals of the plurality of electrochemical cells, wherein the positive terminals of the plurality of electrochemical cells are electrically connected and weldlessly mechanically joined to the second set of interconnect boards employing a plurality of second adhesive joints each located at the longitudinal end of a respective one of the cylindrical outer cans and circumscribed by a respective one of the first adhesive joints, wherein each of the second adhesive joints includes the first adhesive material.
1 more element
Dependencies are inferred from the claim text.